Symmetry

str. 1 SSSYYYMMMMMMEEETTTRRRYYY 111. . . Symmetry is an important concept which is seen in lots of places in mathematics. 222. . . There are several types of symmetry:  the butterfly is an example of reflectional symmetry  the fan blade is an example... More

str. 1 SSSYYYMMMMMMEEETTTRRRYYY 111. . . Symmetry is an important concept which is seen in lots of places in mathematics. 222. . . There are several types of symmetry:  the butterfly is an example of reflectional symmetry  the fan blade is an example of rotational symmetry  the wall paper border is an example of translational symmetry 333. . . Reflectional symmetry which is sometimes called mirror symmetry or line symmetry is when one half is a mirror image of the other half. A figure has line symmetry if a line can be drawn through the figure so that each half is a mirror image of the other. 444. . . The figure has a line of symmetry that divides the figure into two congruent halves. You can place a mirror along a line of symmetry and get an exact copy of the original shape. 555. . . Lines of symmetry TTTRRRIIIAAANNNGGGLLLEEESSS A SSSCCCAAALLLEEENNNEEE TTTRRRIIIAAANNNGGGLLLEEE (no sides equal, no angles equal) has no lines of symmetry An IIISSSOOOSSSCCCEEELLLEEESSS TTTRR Less